1086N-NH.pdfBrochure Mini-Therm BROCHURE - Laars
LAARS MINI-THERM
®
®
Gas-Fired Residential Hydronic Boilers
NOW WITH AUTO SET POINT AND OUTDOOR RESET INCLUDED!
LAARS MINI-THERM ADVANCED CONTROLS ®
The Mini-Therm boiler operates at peak efficiently based on our latest controls upgrade that includes advanced programming to reduce gas consumption and minimize utility bills. This new control also makes the Mini-Therm an easier to install boiler, with a new auto set-point feature that automatically determines the boiler target temperature. Outdoor Reset with Auto Differential Control – Outdoor reset continuously adjusts the boiler heat output to match outdoor conditions. The boiler control does this by reading the outdoor temperature and calculating if there will be a heavy demand or light demand on the boiler based on past history. The controls can compensate for a fast response (cold days) or slower response (warmer days) to reduce fuel use. It also makes it very easy to install since target temperature set points do not need to be setup, the boiler automatically knows what to do! Space Heating with Domestic Water Priority – when an indirect water heater is installed with the Mini-Therm and there is a call for both space heating and domestic water heating the controls will make sure that the domestic water is heated first and then returns to heating the home. This ensures there will always be plenty of hot water at every point in a home.
Mini-Therm boilers offer exceptional value with “high performance hydronics” that give customers the highest performance at the lowest cost. By far, Mini-Therm is the right solution for any size residential home heating system.
The ingenious Laars-Stor™ water heaters are engineered to provide the highest hot water output at the lowest pressure drop of most any indirect fired water heater in the industry. Hot water from the Mini-Therm enters the coiled heat exchanger that sits inside the Laars-Stor tank. The heat from the boiler water is efficiently passed through the heat exchanger coil to the domestic water in the tank. The tank and boiler can be located very close to each other resulting in minimal space used. The Laars-Stor is packed with features to ensure many years of safe, hot water when you need it!
THE COMPACT MINI-THERM FOR SUPERB HOME HEATING COMFORT ™
LAARS MINI-THERM gas-fired residential hydronic boiler is an ideal heating appliance that can reduce homeowners heating costs and has plenty of capacity to keep even the largest home comfortable on the coldest days. The compact boiler has a low-mass heat exchanger and a super-quick heating response to meet your residential application requirements. The Mini-Therm comes in two varieties, JVS-spark ignition and the JVH-hot surface ignition with induced draft. Each is designed to meet specific installation needs while being energy efficient and light on your budget. Natural or propane gas models are available.
UNIQUE HEAT EXCHANGER DESIGN Laars engineers developed a copper tube heat exchanger Copper Finned Tubes
with small cast iron “wet-walls” to combine the benefits of both material properties while removing their potential drawbacks. Features include a low-mass heat exchanger and quick heating response to meet residential application requirements, ideal for new homes or replacement boilers. Heat exchanger reliability has been field proven over many years, be assured that the
Cast Iron wet walls
Mini-Therm will provide heating comfort and dependability.
COMBINED BENEFITS OF COPPER AND CAST IRON • Heat is transferred up to 7 times faster via copper than cast iron. • Less copper is needed to heat the same amount of water as compared to full cast iron boilers, resulting in a smaller and lighter boiler. • The small cast iron wet walls act as mini heat sinks to hold just enough heat to help minimize boiler short cycling. This helps increase efficiency and boiler life.
THE MINI-THERM IS THE PERFECT BALANCE OF TECHNOLOGY, EFFICIENCY AND VALUE.
LAARS® MINI-THERM JVS Extremely popular with homeowners, the JVS model offers an attractive and easy-to service jacket. Well-known for their economy, a built-in draft diverter and automatic vent damper are included to stop your valuable fuel payments from disappearing up the chimney in wasted heat. The durable Mini-Therm JVS is the smart choice for your home heating needs.
Sizing Data Input Natural & Propane MBH kW
Size
Heating Capacity Pro. Gas Nat. Gas kW MBH
Nat. Gas MBH
AFUE Pro. Gas kW
Nat. Gas %
Pro. Gas %
50
50
14.7
43
12.6
43
12.6
85.0
85.4
75
75
22.0
64
18.8
64
18.8
85.0
85.2
100
100
29.3
85
24.9
85
24.9
85.0
85.0
125
125
36.6
106
31.1
106
31.1
85.0
85.0
160
160
46.9
136
39.8
136
39.8
85.0
85.0
225
225
65.9
191
56.0
190
55.7
85.0
85.0
Dimensional Data A Size
in.
50 75
B
133/8
cm 34
133/8
34
100
167/8
125
in.
C
273/4
cm 71
273/4
71
43
283/4
167/8
43
160
203/8
225
205/8
in.
D
18
cm 46
18
46
73
18
283/4
73
52
283/4
65
211/2
in.
E
213/4
cm 55
213/4
55
46
223/4
18
46
73
18
80
20
1071/2
cm 148
Weight kg 120 54
1121/2
155
126
57
1121/2
155
134
61
70
1121/2
155
138
63
271/2
70
1121/2
155
164
74
271/2
70
1121/2
155
181
82
in.
F
261/2
cm 67
271/2
70
58
271/2
70
223/4
58
271/2
46
223/4
58
51
233/4
63
in.
lbs.
LAARS® MINI-THERM JVH Mini-Therm JVH uses an induced draft system with a gravity operated vent damper. The induced draft system allows the JVH to be installed where side-wall or chimney venting is needed. A hot surface ignition system (HSI) is used to operate all six sizes in single stage, on/off firing modes. Compact models are also easy to install, operate and maintain.
Sizing Data Input Natural & Propane
Heating Capacity Pro. Gas Nat. Gas kW MBH
AFUE
MBH
kW
Nat. Gas MBH
50
50
14.7
41
12.0
42
12.3
83.4
84.0
75
75
22.0
62
18.2
63
18.5
83.2
84.0
100
100
29.3
82
24.0
83
24.3
82.4
84.0
125
125
36.6
102
29.9
103
30.2
82.4
82.8
160
160
46.9
131
38.4
132
38.7
82.3
82.4
225
225
65.9
184
53.9
187
54.8
82.2
83.2
Size
Pro. Gas kW
Nat. Gas %
Pro. Gas %
Dimensional Data A Size
in.
B in.
C
50
133/8
75
133/8
34
21/4
6
2
5
165
75
100
167/8
43
53/4
15
27/8
7
180
82
125
167/8
43
51/2
14
2
5
185
84
160
203/8
52
71/4
19
2
5
210
95
225
255/8
65
10
26
2
5
225
102
4 10
C
Induced Draft Blower/Motor
31/8
cm 8
Weight
cm 34
in.
27/8
cm 7
160
kg 73
7 18
Temp/Pressure Gauge
B
lbs.
6-1/8 16
1-1/4 NPT
4-7/8 12
2-3/8 6
Temperature Gauge 11-3/4 30
Pull-out Gas Manifold/ Burner Tray
24-7/8 63 Drain
8-7/8 23
A
24 61
A
S
M
E
H
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130 www.LAARS.com Litho in U.S.A. © Laars Heating Systems 1508 Document 1086N
®
®
Gas-Fired Residential Hydronic Boilers
NOW WITH AUTO SET POINT AND OUTDOOR RESET INCLUDED!
LAARS MINI-THERM ADVANCED CONTROLS ®
The Mini-Therm boiler operates at peak efficiently based on our latest controls upgrade that includes advanced programming to reduce gas consumption and minimize utility bills. This new control also makes the Mini-Therm an easier to install boiler, with a new auto set-point feature that automatically determines the boiler target temperature. Outdoor Reset with Auto Differential Control – Outdoor reset continuously adjusts the boiler heat output to match outdoor conditions. The boiler control does this by reading the outdoor temperature and calculating if there will be a heavy demand or light demand on the boiler based on past history. The controls can compensate for a fast response (cold days) or slower response (warmer days) to reduce fuel use. It also makes it very easy to install since target temperature set points do not need to be setup, the boiler automatically knows what to do! Space Heating with Domestic Water Priority – when an indirect water heater is installed with the Mini-Therm and there is a call for both space heating and domestic water heating the controls will make sure that the domestic water is heated first and then returns to heating the home. This ensures there will always be plenty of hot water at every point in a home.
Mini-Therm boilers offer exceptional value with “high performance hydronics” that give customers the highest performance at the lowest cost. By far, Mini-Therm is the right solution for any size residential home heating system.
The ingenious Laars-Stor™ water heaters are engineered to provide the highest hot water output at the lowest pressure drop of most any indirect fired water heater in the industry. Hot water from the Mini-Therm enters the coiled heat exchanger that sits inside the Laars-Stor tank. The heat from the boiler water is efficiently passed through the heat exchanger coil to the domestic water in the tank. The tank and boiler can be located very close to each other resulting in minimal space used. The Laars-Stor is packed with features to ensure many years of safe, hot water when you need it!
THE COMPACT MINI-THERM FOR SUPERB HOME HEATING COMFORT ™
LAARS MINI-THERM gas-fired residential hydronic boiler is an ideal heating appliance that can reduce homeowners heating costs and has plenty of capacity to keep even the largest home comfortable on the coldest days. The compact boiler has a low-mass heat exchanger and a super-quick heating response to meet your residential application requirements. The Mini-Therm comes in two varieties, JVS-spark ignition and the JVH-hot surface ignition with induced draft. Each is designed to meet specific installation needs while being energy efficient and light on your budget. Natural or propane gas models are available.
UNIQUE HEAT EXCHANGER DESIGN Laars engineers developed a copper tube heat exchanger Copper Finned Tubes
with small cast iron “wet-walls” to combine the benefits of both material properties while removing their potential drawbacks. Features include a low-mass heat exchanger and quick heating response to meet residential application requirements, ideal for new homes or replacement boilers. Heat exchanger reliability has been field proven over many years, be assured that the
Cast Iron wet walls
Mini-Therm will provide heating comfort and dependability.
COMBINED BENEFITS OF COPPER AND CAST IRON • Heat is transferred up to 7 times faster via copper than cast iron. • Less copper is needed to heat the same amount of water as compared to full cast iron boilers, resulting in a smaller and lighter boiler. • The small cast iron wet walls act as mini heat sinks to hold just enough heat to help minimize boiler short cycling. This helps increase efficiency and boiler life.
THE MINI-THERM IS THE PERFECT BALANCE OF TECHNOLOGY, EFFICIENCY AND VALUE.
LAARS® MINI-THERM JVS Extremely popular with homeowners, the JVS model offers an attractive and easy-to service jacket. Well-known for their economy, a built-in draft diverter and automatic vent damper are included to stop your valuable fuel payments from disappearing up the chimney in wasted heat. The durable Mini-Therm JVS is the smart choice for your home heating needs.
Sizing Data Input Natural & Propane MBH kW
Size
Heating Capacity Pro. Gas Nat. Gas kW MBH
Nat. Gas MBH
AFUE Pro. Gas kW
Nat. Gas %
Pro. Gas %
50
50
14.7
43
12.6
43
12.6
85.0
85.4
75
75
22.0
64
18.8
64
18.8
85.0
85.2
100
100
29.3
85
24.9
85
24.9
85.0
85.0
125
125
36.6
106
31.1
106
31.1
85.0
85.0
160
160
46.9
136
39.8
136
39.8
85.0
85.0
225
225
65.9
191
56.0
190
55.7
85.0
85.0
Dimensional Data A Size
in.
50 75
B
133/8
cm 34
133/8
34
100
167/8
125
in.
C
273/4
cm 71
273/4
71
43
283/4
167/8
43
160
203/8
225
205/8
in.
D
18
cm 46
18
46
73
18
283/4
73
52
283/4
65
211/2
in.
E
213/4
cm 55
213/4
55
46
223/4
18
46
73
18
80
20
1071/2
cm 148
Weight kg 120 54
1121/2
155
126
57
1121/2
155
134
61
70
1121/2
155
138
63
271/2
70
1121/2
155
164
74
271/2
70
1121/2
155
181
82
in.
F
261/2
cm 67
271/2
70
58
271/2
70
223/4
58
271/2
46
223/4
58
51
233/4
63
in.
lbs.
LAARS® MINI-THERM JVH Mini-Therm JVH uses an induced draft system with a gravity operated vent damper. The induced draft system allows the JVH to be installed where side-wall or chimney venting is needed. A hot surface ignition system (HSI) is used to operate all six sizes in single stage, on/off firing modes. Compact models are also easy to install, operate and maintain.
Sizing Data Input Natural & Propane
Heating Capacity Pro. Gas Nat. Gas kW MBH
AFUE
MBH
kW
Nat. Gas MBH
50
50
14.7
41
12.0
42
12.3
83.4
84.0
75
75
22.0
62
18.2
63
18.5
83.2
84.0
100
100
29.3
82
24.0
83
24.3
82.4
84.0
125
125
36.6
102
29.9
103
30.2
82.4
82.8
160
160
46.9
131
38.4
132
38.7
82.3
82.4
225
225
65.9
184
53.9
187
54.8
82.2
83.2
Size
Pro. Gas kW
Nat. Gas %
Pro. Gas %
Dimensional Data A Size
in.
B in.
C
50
133/8
75
133/8
34
21/4
6
2
5
165
75
100
167/8
43
53/4
15
27/8
7
180
82
125
167/8
43
51/2
14
2
5
185
84
160
203/8
52
71/4
19
2
5
210
95
225
255/8
65
10
26
2
5
225
102
4 10
C
Induced Draft Blower/Motor
31/8
cm 8
Weight
cm 34
in.
27/8
cm 7
160
kg 73
7 18
Temp/Pressure Gauge
B
lbs.
6-1/8 16
1-1/4 NPT
4-7/8 12
2-3/8 6
Temperature Gauge 11-3/4 30
Pull-out Gas Manifold/ Burner Tray
24-7/8 63 Drain
8-7/8 23
A
24 61
A
S
M
E
H
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130 www.LAARS.com Litho in U.S.A. © Laars Heating Systems 1508 Document 1086N
